paper_1_12889_997
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1) The spring of modulus k = 3.5 kN/m is stretched 10 mm when the disk center O is in the left most position x = 0. Determine the tension T required to position the disk center at x = 150 mm. A that position, what force N is exerted on the horizontal slotted guide? The mass of the disk is 3 kg.
Solution
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2) A portion of the shifter mechanism for a manual car transmission is shown in the figure. For the 4 Ib force exerted on the shift knob, determine the corresponding force p exerted by the shift link BC on the transmission (not shown). Neglect friction in the ball and socket joint at o, in the joint at B and in the slip tube near support D. note that a soft rubber bushing at D allows the slip tube to self align with link BC.
Solution
3) The light bracket ABC is freely hinged at A and is constrained by the fixed pin in the smooth slot at B. calculate the magnitude r of the force supported by the pin at A under the action of the 80 N.m applied couple.
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4) Calculate the forces in members BE and BD of the loaded truss.
Solution
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5) Determine the force in each member of the truss. Solution
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6) Calculate the forces in members CF, CG, and EF of the loaded truss. Solution
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7) Determine the forces in members BC, CF and EF of the loaded truss.
Solution
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8) The members CJ and CF of the loaded truss cross but are not connected to members BI and DG. Compute the forces in members BC, CJ, CI, and HI.
Solution
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9) Determine the magnitude of the pin reaction at A and the magnitude and direction of the force reaction at the rollers. The pulleys at C and D are small.
Solution
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10) The setrut AB of negligible mass is hinged to the horizontal surface at A and to the uniform 25 kg wheel at B. determine the minimum couple M applied to the wheel which will cause it to slip if the coefficient of static friction between the wheel and the surface is 0.4.
Solution
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11) The 10 kg solid cylinder is resting in the inclined V-block. If the coefficient of static friction between the cylinder and the block is 0.5, determine (a) the friction force F acting on the cylinder at each side before force P is applied and (b) the value of p required to start sliding the cylinder up the incline.
Solution
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12) The two blocks are placed on the incline with the cable taut. (a) Determine the force P required to initiate motion of the 15 kg block if P is applied down the incline. (b) If P is applied up the incline and slowly increased from zero, determine the value of P which will cause motion and describe that motion.
Solution
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